基本信息:
- 专利标题: CRAWLER VEHICLE STEERING SYSTEM WITH FAILURE DETECTION DEVICE
- 申请号:JP2000295541 申请日:2000-09-28
- 公开(公告)号:JP2001158374A 公开(公告)日:2001-06-12
- 发明人: HOU YIFEI R , MISTRY SANJAY ISHVARLAL , BERGENE MARK ALLEN , TOPPIN SCOTT ALLEN
- 申请人: DEERE & CO
- 专利权人: DEERE & CO
- 当前专利权人: DEERE & CO
- 优先权: US40836899 1999-09-29
- 主分类号: B62D11/10
- IPC分类号: B62D11/10 ; B61C17/00 ; B62D11/18 ; B62D55/06
摘要:
PROBLEM TO BE SOLVED: To detect failures related to a steering pump and prevent vehicle turning unless actual turning is commanded by a driver. SOLUTION: When a steering control signal indicates that a steering wheel 74 is turned in a direction opposite to the direction of rotation of a steering motor 42, a control unit 70 saves a first ratio value representing a ratio of the motor speed to the pump speed. When the signal is unchanged after a certain time duration, the control unit 70 saves a second ratio value representing a later ratio of the motor speed to the pump speed. The control unit then calculates a difference between the first and second ratio values, and generates a fault signal if the difference has a magnitude which is less than a predetermined magnitude. Thus, the control system generates a fault signal when the sensed signal indicates that the position of a steering pump swashplate is not changing as it should in response to changes in steering wheel position.
公开/授权文献:
信息查询:
EspacenetIPC结构图谱:
B | 作业;运输 |
--B62 | 无轨陆用车辆 |
----B62D | 机动车;挂车 |
------B62D11/00 | 不可偏转车轮的转向机构;履带或类似部件的转向机构 |
--------B62D11/02 | .用差速驱动相对的车辆两侧的行走部件 |
----------B62D11/06 | ..用单个主动力源 |
------------B62D11/10 | ...用对边具有不同功率输出的传动装置,例如双差速或外摆线转动装置 |